Home / 11,319.20-17,004.40-7,863.20

Finding the Fourth Proportional to 11,319.20, 17,004.40 and 7,863.20

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Solution

The fourth proportional to 11,319.20, 17,004.40 and 7,863.20 is: 11,812.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,319.20 : 17,004.40 = 7,863.20 : x
  2. Step 2: Convert to fraction form
    11,319.20/17,004.40 = 7,863.20/x
  3. Step 3: Cross multiply
    11,319.20x = 17,004.40 × 7,863.20
  4. Step 4: Simplify right side
    11,319.20x = 133,708,998.08
  5. Step 5: Solve for x
    x = 133,708,998.08/11,319.20
  6. Step 6: Final answer
    x = 11,812.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.